• Journal of Life Science
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• v.19 no.2
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• pp.219-227
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• 2009

The antifatigue and endurance promoting properties of two Korean medicinal herb extracts and molasses with various mineral components were studied by evaluating forced-swimming capacity and biochemical parameters in ICR mice. The treatment groups were orally administered mineral beverages which were contained 6% sugar with the mixture of Maesil (Prunus mume fruit) extracts, Omija (Schisandra chinensis fruit) extracts and molasses for 4 weeks. The exercised forced-swimming tests were conducted after 28 days of beverage supplementation. The swimming times to exhaustion were longer 1.5${\sim}$2 times in group 6 and group 10 than control goup (Control: 93.2${\pm}$10.4 sec; Beverage 6; 190.8${\pm}$25.6 sec, Beverage 10; 173.6${\pm}$21.8 sec; p<0.05). Moreover, the activity of hexokinase (Control: 5.23${\pm}$0.38 ${\mu}mol$l/g tissue; Beverage 6: 5.99${\pm}$0.18 ${\mu}mol$/g tissue, Beverage 10: 6.13${\pm}$0.25 ${\mu}mol$/g tissue, p<0.05) and citrate synthase (control: 42.9${\pm}$1.87 ${\mu}mol$/g tissue; Beverage 6: 56.8${\pm}$3.98 ${\mu}mol$/g tissue, Beverage 10; 59.5${\pm}$3.09 ${\mu}mol$/g tissue, p<0.05) were also significantly higher than those of control group. Even if the treatment groups had long swimming than control group, there is no significant difference in the glycogen contents of gastrocnemus muscle or liver between the control group and each treatment group. This demonstrated an improvement in endurance. These results suggest that reported herbal beverage is very effective to combat fatigue, improve endurance and increase overall physical activity.

• Journal of the Korean Society of Food Science and Nutrition
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• v.31 no.5
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• pp.847-885
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• 2002

The purpose of this study was to develop a web-based internet program for nutritional assessment and diet Prescription by renal diseases. Renal diseases were classified by nephrotic syndrome, renal failure, hemodialysis and peritoneal dialysis. The system consisted of five parts according to their functions and contents. The first part is to assess the general health status such as body weight, obesity index, basal metabolic rate and total energy requirement by the input of age, sex, height, weight and degree of activity. The second part was designed to investigate dietary history of patient, that is, to find out his inappropriate dietary habit and give him some suggestions for appropriate dietary behavior by investigating his dietary history. This part also offers the diet and nutrition management by personal status with renal disease, and the information for food selection, snacks, convenience foods, dine-out, behavioral modification, cooking methods, food exchange lists and terms. The third part is evaluating their energy and nutrients intake by comparing with recommended dietary allowance for Koreans or standardized data for patient with renal disease. In this part, it is also analyzing energy and nutrients of food consumed by food group and meals, and evaluating the status of nutrient intake. The fort]1 one, a major part of the system, is implementing the diet and menu planning by using food exchange lists. This Part Provides the patient with menus lists and I day menu suitable to his weight, activity and the status of renal disease. The fifth part is providing information on energy and nutrients of foods and drinks, and top 20 foods classified by nutrients. These results are finally displayed as tabular forms and graphical forms on the computer screen.

• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.1
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• pp.114-122
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• 2004

The purpose of this study was to develop a web-based internet program for nutritional counseling and diet management of patient with diabetes mellitus. The program consisted of four parts according to their functions and contents. The first part explained the metabolism of glucose and mechanism of insulin and insulin receptor expressed by flash 6.0, and defined the diabetes mellitus. The second part is to assess the general health status such as body weight, obesity index, basal metabolic rate and total energy requirement by the input of age, sex, height, weight and degree of activity. This part also provides tlne patient with menu lists and one day menu suitable to his weight and activity, and offers the information for food selection, snacks, convenience foods, dine-out, behavioral modification, cooking methods, food exchange lists, dietary education using buffet, and information on energy and nutrients of foods and drinks, and top 20 foods classified by nutrients. The third part is designed to investigate dietary history of patient, that is, to find out his inappropriate dietary habit and give him some suggestions for appropriate dietary behavior. This part also offers on-line counseling, follow-up management and frequently asked questions. The fourth part is evaluating their energy and nutrients intake by comparing with recommended dietary allowance for Koreans or standardized data for patient with diabetes mellitus. In this part, it is also analyzing energy and nutrients of food consumed by food group and meals, and evaluating the status of nutrient intake. These results are finally displayed as tabular forms and graphical forms on the computer screen. Therefore it is expected that the web-based internet program developed in this study will play a role in their health promotion as widely using by diabetic patients.

• Korean Journal of Community Nutrition
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• v.10 no.5
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• pp.603-614
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• 2005

This study was performed to investigate the correlation between Premenstrual syndrome (PMS) and nutritional intake, blood composition of female students. One hundred and one female students were selected as the experimental subjects at Gyeongsang National University. To assess the PMS symptoms of the subjects, a questionnaire (PAP) score based on the methods of Halbreich, Endicor and Nee was prepared with 34 different items. Dietary survey was conducted by 24­hour recall method for 3 days and nutrient intakes were analyzed by the CAN-Pro. Blood composition of WBC, RBC, Hb, Hct, Ca and Mg was measured. The average height, weight and BMI of subjects were $160.7\pm4.6cm,\;54.1\pm5.7kg\;and\;21.2\pm1.9$, respectively. Average intakes of energy, calcium, iron, zinc, vit $B_2$, and folic acid per day were $1810.2\pm344.9kcal(90.5\%\;of\;RDA),\;621.1\;197.3mg(88.7\%\;of\;RDA),\;15.9\;pm4.9mg\;(99.3\%\;of\;RDA),\;8.1\pm3.4mg(80.5\%\;of\;RDA),\;1.1\pm0.6mg(88.3\%\;of\;RDA)\;and\;234.3\pm78.6{\mu}g(93.7\%\;of\;RDA)$, respectively. Score of the behavioral symptoms, psychologic symptoms, physical symptoms and other symptoms were recorded $1.79\pm0.86,\;2.11\pm1.08,\;2.31\pm1.11\;and\;1.58\pm0.86$, respectively. The relation between PMS and menstrual cramps was significant. A significant difference was observed for menstruation amount in physical symptoms (p<0.05) and other scores (p<0.05). The group who drinks alcohol over 30g per day showed higher scores at total PAP (p<0.05), psychologic symptoms (p<0.05), physical symptoms (p<0.05), and other scores (p<0.05) than those who don't drink alcohol. Calcium in the blood showed a negative correlation with total PAF score (p<0.05), behavioral symptoms (p<0.05), physical symptoms (p<0.05) and other scores (p<0.01). Magnesium in the blood showed a negative correlation with physical symptoms (p<0.05), other score (p<0.05). WBC was negatively associated with psychologic scores (p<0.05). Hb and Hct were negatively associated with other scores (p<0.05). In conclusion, calcium intake showed a level of $88.7\%$ of RDA and this study revealed that there is a correlation between PMS and blood composition in female college students. Therefore, calcium and magnesium supplements can be beneficial to relieve PMS symptoms.

• Journal of Nutrition and Health
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• v.34 no.4
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• pp.440-448
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• 2001

As diverse physiological functions of taurine have been reported, taurine-containing health drinks and products are marketed worldwide for the treatment of various conditions such as improvements of liver, heart and circulatory functions or as an aid to athletic performance. Although animal studies have shown that taurine is fairly safe when supplemented in the diet for an extended period, the effective dose range of taurine for dietary supplements is in controversy. Reports on dietary taurine intakes have been sparse, and would serve as a guideline for determining an appropriate taurine dosage. The present study was aimed to estimate dietary intake level of taurine using the taurine content database of commonly used food stuffs established recently in our laboratory, and also to evaluate plasma concentration and urinary excretion of taurine in adolescents and adults residing in Seoul area. Dietary taurine intakes of the subjects were 219$\pm$16.9mg/day for 16-19 years old(n=123), 177$\pm$18.1mg/day for adults older than 20 years old(n=123). Male subjects(n=115) consumed 216$\pm$21.1mg of taurine/day, while female subjects(n=131) consumed 181$\pm$14.3mg of taurine/day(p<0.05). The level of dietary taurine intake was positively correlated with the levels of dietary intakes of energy, carbohydrate, total lipids, cholesterol, vitamin A, vitamin B$_1$, niacin, vitamin C, calcium, phosphorous, sodium and potassium at p<0.01, and with dietary intakes of iron and animal lipids at p<0.05, respectively. Plasma taurine concentration of subjects were 135$\pm$5.9$\mu$mol/L, which is considered to be within a normal range for healthy subjects. The subjects excreted 1158$\pm$72.7nmol/ of tarine mg creatinine in their urine, which is approximated as 150-170mg of taurine/24hr urine based on the assumption that 18mg creatinine/kg/day is excreted in the urine of healthy adults, and this would be about 80% of the daily taurine intake observed in the same subjects. Dietary taurine intake level was positively correlated with plasma taurine concentration, as well as with urinary taurine excretion corrected by creatinine excretion at p<0.05. The present study was the first report of taurine intake, and plasma concentration and urinary excretion of taurine in a Korean population so far, and these results would serve as an index for the future study evaluating taurine status in a diverse population within and outside Korea. (Korean J Nutrition 34(4) : 440~448, 2001)

• Journal of Nutrition and Health
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• v.40 no.sup
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• pp.9-21
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• 2007

This study aimed to assess the total sugar intake for Korean and to identify major food sources contributing to those food components. Korean adults aged over 20 years old from the Korean National Health and Nutrition Examination Survey (KNHANES) 2001 and 2002 were selected. The data were analyzed to obtain nationally and seasonally representative information on the health and nutritional status of the Korean. Forty food groups were used in identifying food sources of total sugar and energy intake. Total sugar contents of foods in the KNHANES data sets were estimated by food code matching technique with Release 18 of the USDA National Nutrient Database for Standard Reference. Sample weighted means, standard errors, and population percentages were calculated using SAS and SUDAAN. The mean total sugar intake of the Korean was 60.3g in 2001, 40.9g in spring 2002, 45.7g in summer 2002, and 52.1g in fall 2002, which were 30-44% of intake of US people. Fresh fruit was identified as the most significant food source for total sugar intake in Korean population in all age groups and all seasons. The next major food sources following fresh fruits were candy/jelly/syrup/honey, coffee/coffee caream, vegetables, Kimchi, soft drinks, milk, fruit juice, cookie/cracker/cake, and vegetable juice/grain juice, which showed similar results through the seasons. While carbonated soft drink was the most significant food sources for total sugar or added sugar intakes for US people. The total sugar intakes were significantly higher in women, higher educational level, and residing in metropolitan area. As intake of total sugar increased, intakes of protein, fiber, calcium, phosphorus, iron, Vit A, B1, B2, C, niacin showed significantly increased, while high intakes of added sugars showed low intakes of some micronutrients in the US people. Percentages of people who consumed nutrients below EAR were less in higher total sugar intake group than in lower intake group. From these results, we can conclude that the food consumption habits including the total sugar intake of Korean people seems relatively good so far. More reliable database of total sugar and added sugar composition tables in public domain should be established in the future, and also more researches about total sugar and added sugar for Koreans should be continued.

• Journal of Nutrition and Health
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• v.47 no.4
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• pp.268-276
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• 2014

Purpose: The aim of this study is to estimate total sugar intake and identify major food sources of total sugar intake in the diet of the Korean population. Methods: Dietary intake data of 33,745 subjects aged one year and over from the KNHANES 2008-2011 were used in the analysis. Information on dietary intake was obtained by one day 24-hour recall method in KNHANES. A database for total sugar content of foods reported in the KNHANES was established using Release 25 of the U.S. Department of Agriculture National Nutrient Database for Standard Reference, a total sugar database from the Ministry of Food and Drug Safety, and information from nutrition labeling of processed foods. With this database, total sugar intake of each subject was estimated from dietary intake data using SAS. Results: Mean total sugar intake of Koreans was 61.4 g/person/day, corresponding to 12.8% of total daily energy intake. More than half of this amount (35.0 g/day, 7.1% of daily energy intake) was from processed foods. The top five processed food sources of total sugar intake for Koreans were granulated sugar, carbonated beverages, coffee, breads, and fruit and vegetable drinks. Compared to other age groups, total sugar intake of adolescents and young adults was much higher (12 to 18 yrs, 69.6 g/day and 19 to 29 yrs, 68.4 g/day) with higher beverage intake that beverage-driven sugar amounted up to 25% of total sugar intake. Conclusion: This study revealed that more elaborated and customized measures are needed for control of sugar intake of different subpopulation groups, even though current total sugar intake of Koreans was within the range (10-20% of daily energy intake) recommended by Dietary Reference Intakes for Koreans. In addition, development of a more reliable database on total sugar and added sugar content of foods commonly consumed by Koreans is warranted.

• Journal of Nutrition and Health
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• v.50 no.3
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• pp.270-283
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• 2017

Purpose: This study was conducted to examine coffee consumption behaviors, dietary habits, and nutrient intakes by coffee intake amount among university students. Methods: Questionnaires were distributed to 300 university students randomly selected in Gongju. Dietary survey was administered during two weekdays by the food record method. Results: Subjects were divided into three groups: NCG (non-coffee group), LCG (low coffee group, 1~2 cups/d), and HCG (high coffee group, 3 cups/d) by coffee intake amount and subjects' distribution. Coffee intake frequency was significantly greater in the HCG compared to the LCG (p < 0.001). The HCG was more likely to intake dripped coffee with or without milk and/or sugar than the LCG (p < 0.05). More than 80% of coffee drinkers chose their favorite coffee or accompanying snacks regardless of energy content. More than 75% of coffee takers did not eat accompanying snacks instead of meals, and the HCG ate them more frequently than LCG (p < 0.05). Breakfast skipping rate was high while vegetable and fruit intakes were very low in most subjects. Subjects who drank carbonated drinks, sweet beverages, or alcohol were significantly greater in number in the LCG and HCG than in the NCG (p < 0.01). Energy intakes from coffee were $0.88{\pm}5.62kcal/d$ and $7.07{\pm}16.93kcal/d$ for the LCG and HCG. For total subjects, daily mean dietary energy intake was low at less than 72% of estimated energy requirement. Levels of vitamin C and calcium were lower than the estimated average requirements while that of vitamin D was low (24~34% of adequate intake). There was no difference in nutrient intakes by coffee intake amount, except protein, vitamin A, and niacin. Conclusion: Coffee intake amount did not affect dietary nutrient intakes. Dietary habits were poor,and most nutrient intakes were lower than recommend levels. High intakes of coffee seemed to be related with high consumption of sweet beverages and alcohol. Therefore, it is necessary to improve nutritional intakes and encourage proper water intake habits, including coffee intake, for improved nutritional status of subjects.

• Journal of Nutrition and Health
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• v.45 no.5
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• pp.479-488
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• 2012

This study aims to investigate the nutritional status of night eaters using the data from 2005 Korean National Health and Nutrition Examination Survey. A total of 3,903 subjects aged 20 and above were divided into 3 groups by using 24-hr recall data according to the night snack calorie intake: non-night snack, night snack less than 500 kcal and 500 kcal and more. Their data were analyzed to find out the difference on the socio-demographic, anthropometric, blood pressure, blood parameters and dietary characteristics. Among the subjects, non-night eaters were 66.0%, night eaters of less than 500 kcal were 28.4% and 500 kcal and above were 5.6%. Male adults, young-aged, higher educated, higher income earner, breakfast skipper and frequent dine-outer (3 times and more a day) were found more in the night eaters with 500 kcal and above. Night eaters above 500 kcal showed higher waist circumference, Glu-FBS, Glu-PP120 and also showed higher daily intake of fat and alcohol per 1,000 kcal and food groups of meat & eggs, beverages and alcohol drinks (p < 0.05), while they showed the lowest carbohydrate energy ratio of $58.3{\pm}13.7$ among the three groups. These results suggest that habitual night snack intake above 500 kcal could lead to abdominal obesity and diabetes due to higher intake of meat, fat and alcohol.

• Journal of Nutrition and Health
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• v.51 no.5
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• pp.465-479
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• 2018

Purpose: This study examined the frequency of sugar-sweetened beverage consumption in Korean adolescents and the major factors influencing the excessive consumption of sugar-sweetened beverages, such as sociodemographic characteristics, health-related behaviors, psychological characteristics, and dietary habits. Methods: The analysis was performed using the data from the 2017 Korean Youth Risk Behavior Web-based Survey. The subjects included in the analysis were 30,885 middle school students and 31,391 high school students, totaling 62,276. The frequency of sugar-sweetened beverage consumption was calculated by summing the consumption frequencies of soda, high caffeine or energy drinks, and sweet beverages over the last 7 days. The Rao-Scott chi-square test, reflecting information on the sampling design, was used to test the differences in the rate of sugar-sweetened beverage consumption according to each factor. Logistic regression analysis was performed to examine the factors influencing the excessive consumption of sugar-sweetened beverages. Results: The rate of sweetened beverage consumption was higher in boys than in girls, in high school students than in middle school students, in students whose father's education level was lower, in those whose subjective academic performance was lower, and in those who smoked or consumed alcohol. In addition, the rate of sugar-sweetened beverage consumption was higher in those who experienced severe stress, suicidal ideation, sadness, or a sense of despair. The rate of sugar-sweetened beverage consumption was also high in those who skipped breakfast; who frequently consumed fast foods, ramen, or snacks; and who frequently ate meals at convenience stores, supermarkets, or school stores. Conclusion: The rate of sugar-sweetened beverage consumption in Korean adolescents is related to various factors, such as sociodemographic characteristics, health-related behaviors, psychological characteristics, and dietary habits.